摘要
以幼刺参为实验材料,在10℃、15℃、20℃条件下测定其体壁、消化道及呼吸树中Zn2+、Cu2+的蓄积量、蓄积速率及浓缩系数。研究发现,10℃时,Zn2+于第8 d在刺参体壁、消化道达到蓄积顶点,最大蓄积量分别为245.48×10-6和973.35×10-6;Cu2+于15℃,第8 d在幼刺参体壁和消化道达到最大蓄积量,分别为9.34×10-6和59.65×10-6;20℃时,Cu2+于第8d在呼吸树达到最大蓄积量,为622.37×10-6。研究表明,刺参消化道对Zn2+的蓄积大于体壁的蓄积,刺参呼吸树对Cu2+的蓄积大于消化道和体壁的蓄积。同时,温度显著影响Zn2+、Cu2+的蓄积。为了更好地理解Zn2+、Cu2+不同温度下在幼参体内的蓄积过程,本研究采用经典的非线性最小二乘估计原理构建数学模型,很好地模拟了重金属在不同的组织中随时间变化的动力学过程。
The accumulation dynamics of Zn^2＋ , Cu^2＋ in the body wall, alimentary canal and aspirator tree of the juvenile Apostichopus japonicus at 10℃,15℃,20℃ was studied. At the same times, the accumulation speed and concentration coefficient were measured. The results showed that at 10℃, the accumulations of Zn^2＋ in the body wall and alimentary canal reached the peak, which were 245.48×10^-6 and 973.35×10^-6, respectively. At 15℃, the accumulations of Cu^2＋ in the body wall and alimentary canal reached the peak, which were 9.34×10^-6 and 59.65×10^-6 respectively. At 20℃, the accumulation of Cu^2＋ in the aspirator tree reached 622.37×10^-6. The result also showed that the accumulation of Zn^2＋ in the alimentary canal was more than that the body wall, the accumulation of Cu^2＋ in the aspirator tree was more than the body wall and alimentary canal. At the same times, temperature also influenced the accumulations of Zn^2＋, Cu^2＋ evidently. In order to simulate the accumulations of Zn^2＋, Cu^2＋ in the sea cucumber, the dynamics model of accumulation was developed, and the model is applied to simulate well.
出处
《海洋环境科学》
CAS
CSCD
北大核心
2008年第4期359-362,共4页
Marine Environmental Science
基金
刺参遗传育种和池塘高效养殖技术及其理论基础研究大科技发[2002]114号
刺参“化皮”现象及健康养殖研究K2006-19
关键词
ZN^2+
CU^2+
刺参
蓄积
Zn^2＋ ,Cu^2＋
juvenile of Apostichopus japonicus
accumulation
